Parallel execution of serverless commands should be blocked

[HyperBrain]

This is a Bug Report

Description

Currently it is possible to execute a Serverless command while another one is still running (e.g. package is running and you invoke deploy). This leads to a messed up serverless run, because Serverless is designed to run only one command at a time.

The extension should store a flag in the extension context that indicates if a command is currently active. Any further command execution should show an error, as long as the current command has not been finished.

Additional Data

• Extension version: 0.0.4
• Serverless Framework:
  Version: any

• Serverless installed globally

• Operating System: any
• Stack Trace (if available):